It was released on January 16, 2017, by Blockberry Creative and distributed by CJ E&M as the fourth of 12 albums.

[1] It introduces member YeoJin and contains three tracks, her solo and the main track, "Kiss Later", a duet between HeeJin and HyunJin (two previously released members) titled "My Sunday", and a duet between her and HaSeul titled "My Melody".

All lyrics written by GDLO and Shin Agnes (MonoTree), except where noted.

All music composed by Kim Yoo-seok, Chu Dae-kwan, and GDLO (MonoTree), except where noted.

All tracks arranged by Chu Dae-kwan and Kim Yoo-seok (MonoTree), except where noted.